US1943513A - Chemical compound - Google Patents

Description

The use of the theoretical quantity results in an Y Patented Jan. 16 1934 UNITED STATES PATENT OFFICE Remington 'Arms of Delaware No Drawing.

13 Claims.

This invention relates to certain new chemical compounds of a somewhat explosive nature, to the preparation of such compounds, and to their use either alone or in conjunction with other substances as explosive compositions, particularly as compositions for use as ammunition priming mixtures.

The compounds are derivatives of ortho cresol, particularly lead salts of 3-5 di-nitro ortho cresol. Two such lead salts have been discovered, and theiranalyses indicate compositions corresponding respectively to mono-basic lead 3-5 dinitro cresylate and di-basic lead 3-5 (ii-nitro cresylate.

The mono-basic salt is prepared as follows: A solution of 1.98 grams of 3-5 di-nitro ortho cresol and .8 grams of sodium hydroxide in 100 c. c. of water is dropped into a solution of 3.5 grams of lead nitrate in'100 c. c. of water, at-a temperature between and C. The precipi tate, which is of a light yellow color and of fluffy character, is filtered off and washed with water. It has a lead content of l-8.84%, corresponding substantially to the theoretical lead content,

49.19%, of mono-basic lead 3-5 di-nitro ortho cresylate having the structural formula COPbOH H-C c-crn NOz-Cl C-NOZ The di-basic salt is prepared as follows: A solution of 1.98 grams of 3-5 di-nitro ortho cresol and 1.2 grams of sodium hydroxide in 100 c. c. of water is dropped slowly into a solution of 10.5 grams of lead nitrate in 100 c. c. of water, at atemperature between 80 and C. After cooling, the precipitate is filtered off, washed and dried. Said precipitate is in the form of brownish rhombic crystals. It will be noted that the quantity of lead nitrate is an excess of about %-over the theoretically re-acting quantity. It is necessary to use such an excess of lead nitrate in order to secure a crystalline precipitate.

amorphous yellow precipitate only. The precipitated compound is found upon analysis to have a lead content of 57.35% which is almost identi- Company, Inc., a. corporation Application October 19, 1931 Serial No. 569,838

(Cl. 52-4) cal with the theoretical lead content-57.36%, of

di-basic lead 3-5 di-nitro ortho cresylate of the formulaa it Both of these salts have been found useful as priming mixture ingredients, particularly priming mixture fuels. The di-basic salt, however, is preferred for this purpose on account of its greater density and crystalline character. The semi-explosive character of. either salt adds to its value as a priming mixture fuel, since mixtures containing such semi-explosive fuels tend to be more sensitive to percussion than mixtures utilizing only inert substances as fuels.

Typical priming mixtures are included in the following table:

Mercury fulminate 30% to 50% Barium nitrate l 20% to 40% Mono-basic or di-basic lead 3-5 di-nitro ortho cresylate 5% to 15% Abrasive substantially 20% This formula, however, is merely typical. The explosive, mercury fulminate, may be replaced wholly or in part by a nitro organic compound, such as a lead salt of styphnic acid, or such a salt in admixture with guanylnitrosaminoguanyltetracene, lead methylene di-iso nitro amine, diazo-di nitro phenol, a lead salt of picric acid, and similar explosive bodies. Suitable non-corrosive oxidizers include other nitrates, such as normal or basic lead nitrate, chromates; permanganates, oxides and peroxides. Other fuels, such as lead sulphocyanate, antimony sulphide and/or calcium silicide, may likewise be used in conjunction with the lead salts of 3-5 di-nitro ortho cresol. The said lead salts being themselves novel, the appended claims are to be broadly construed.

. What is claimed is:

1. As a composition of matter, a lead salt of 3-5 di-nitro ortho cresol.

2. As a composition of matter, 'a basic lead salt of 3-5 di-nitro ortho cresol.

3. As a composition of matter, mono-basic lead 3-5 di-nitro ortho cresylate. 1

4. As a composition of matter, di-basic lead 3-5 di-nitro ortho cresylate.

5. A priming composition containing a lead salt of 3-5'di-nitro ortho cresol.

7. A priming compositionfcontaining monobasic lead 3-5 di-nitro ortho cresylate.

8. A priming composition containing di-basic lead 3-5 di nitro ortho cresylate. i

9. A priming composition containing a lead salt of 3-5 di-nitro ortho cresol, a, suitable combustion initiator, and a suitableoxidizer.

10. A priming composition containing di-basic lead 3-5 di-nitro ortho cresylate. a suitable come bustion initiator, and a suitable oxidizer.

' 11. The method of making a lead salt of 3-5 di-nitro ortho cresolwhich comprises the addimaasis :di-nitro ortho cresol.

12. The method of making mono-basic lead 3-5 di-nitro ortho cresylate which comprises precipitating said salt by the addition to a solution of 6. A priming composition containing a basiclead salt of 3-5 di-nitro ortho cresol.

3.5 grams of lead nitrate in 1000. c. of water of a solution of 1.98 grams of 3-5 di-nitro ortho cresol and .8 grams of sodium hydroxide in 100 c. c. of. water at a temperature between and C.

13. The method of making (ii-basic lead 3-5 di-nitro ortho cresylate which comprises precipitating said salt by the addition to a. solution of 10.5 grams of lead nitrate in 100.c. c. of water of a solution of 1.98 grams of 3-'5 di-nitro ortho cresol and 1.2 grams of sodium hydroxide in c. c. of water at a temperature between 80 and WIILI BRfiN.